To fix a slow computer, you must run diagnostics to determine whether the bottleneck is caused by overloaded software or failing hardware. 1. Check Real-Time Resource Bottlenecks
Use the built-in Windows Task Manager to immediately see what is choking your system performance.
Open Task Manager: Press Ctrl + Shift + Esc on your keyboard.
Check the Processes Tab: Click the CPU, Memory, and Disk column headers to sort by the highest usage.
End Heavy Tasks: If an unneeded program uses 90–100% of a resource, right-click it and select End Task.
Check System Up-Time: Go to the Performance tab, click CPU, and look at “Up time”. If it has been running for days, restart your PC to clear cached memory lag. 2. Manage Startup App Clutter
Too many apps launching automatically during boot consume background resources indefinitely. In Task Manager, navigate to the Startup apps tab. Review the list of apps enabled at boot.
Right-click any non-essential app (like game launchers or cloud storage you don’t use daily) and select Disable. 3. Diagnose and Repair System Corruption
Corrupted Windows files can trigger sudden system sluggishness and freezes.
Click the Start Menu, type cmd, right-click Command Prompt, and choose Run as administrator.
Type DISM.exe /Online /Cleanup-image /Restorehealth and press Enter. This downloads fresh files to replace corrupt ones.
Once completed, type sfc /scannow and press Enter. This scans and repairs your core system files. 4. Test RAM for Errors
Faulty system memory causes unpredictable lag, applications to crash, and blue screens.
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